According to Maxwell, a changing electric field produces (A) emf (B) radiation pressure (C) electric current (D) magnetic field

Maxwell's Equations are a set of four fundamental equations that describe the behavior of electric and magnetic fields. In this problem, we focus on the equation that relates a changing electric field to the phenomenon it creates.

According to the third equation of Maxwell (Faraday's Law), a changing electric field produces a magnetic field. Faraday's Law states that the induced electromotive force (EMF) in a closed loop is equal to the rate of change of the magnetic flux through the loop. Mathematically, this can be written as: \( -\frac{d\Phi_B}{dt} = EMF \) Where \(\Phi_B\) is the magnetic flux and t is the time. Now, we look through the given options and match the one that aligns with our understanding of Maxwell's Law: (A) emf - This is the result of a changing magnetic field, not a changing electric field. (B) radiation pressure - This is related to the interaction of electromagnetic waves and matter, not directly to the changing electric field itself. (C) electric current - This can be a result of the induced EMF due to a changing magnetic field, but not directly due to a changing electric field. (D) magnetic field - This is the correct option since a changing electric field produces a magnetic field according to Faraday's Law (part of Maxwell's Equations). The correct answer is (D) magnetic field.